<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
  <script src="./vue.js"></script>
</head>
<body>
<div id="root">
  <div @click="outerHandler" style="background:red;width:500px;height: 500px;">
    <div @click.stop="middleHandler" style="background:green;width:300px;height: 300px;">
      <div @click.stop="innerHandler" style="background:pink;width:100px;height: 100px;"></div>
    </div>
  </div>
</div>
</body>
<script>
  new Vue({
    el:'#root',
    methods:{
      innerHandler(){
        // e.stopPropagation();
        console.log("innerHandler")
      },
      middleHandler(){
        console.log("middleHandler")
      },
      outerHandler(){
        console.log("outerHandler")
      },
    }
  })
</script>
</html>